lua-check-hyphen – Mark hyphenations in a document, for checking

The pack­age looks at all hy­phen­ation breaks in the doc­u­ment,
com­par­ing them against a white-list pre­pared by the au­thor. If a
hy­phen­ation break is found, for which there is no en­try in the
white-list, the pack­age flags the line where the break starts.

The au­thor may then ei­ther add the hy­phen­ation to the white-list,
or ad­just the doc­u­ment to avoid the break.